5th. The state of the other corps, after sailing from Tortola, I am unacquainted with. When lying at Tortola, on the 29th and 30th of July, the Betsy communicated with the transports which had the 8th and 10th regiments on board. On the 6th of August, the first case of the yellow fever appeared on board the Betsy; from which period to the 12th of September, 1796, every person almost was once, and a great many on board twice, attacked with this fever. Of one hundred and forty people on board the Betsy, the captain of the ship, eighteen soldiers, and one woman, died in this period. It should, however, be mentioned, that, of the soldiers, several were old and worn-out invalids. During the passage from Tortola to England, our convoy, the Hebe frigate, suffered even more than the Betsy. When sent for on board, by Captain Scott, I found that he had not only lost many seamen and marines, but several officers, and two medical gentlemen. 6th. On the fleet, from Grenada, anchoring at Tortola, the yellow fever was unknown there; thereafter, I have heard, that it prevailed generally, and committed great havoc. 7th. Those labouring under dysentery, ague, &c. were those first seized with this fever. 8th. [_Symptoms._]—The attack was first with extreme debility, affection of the head, and frequently the appearance of drunkenness. Next, the abdomen was complained of, and the biliary system appeared to be a principal seat of the disease. The yellowness, though not a constant, was a generally attending symptom. The eyes first appeared of a watery suffusion; they next were observed to be blood-shot; and, in a short time after, yellow; from the eye, the yellowness quickly spread over all the body, and the patient in a little time had the appearance of one highly jaundiced. Sometimes the yellow colour of the body continued for some time after the patient got well, and purgatives brought off yellow stools, while the urine was at the same time yellowish. The irritability of the stomach, and what is called the black vomiting, were pretty constant attending symptoms. The state of the pulse varied in the course of the disease; there was at first, almost always, a firm and strong pulse, with so much re-action, as would lead a stranger to the disease to blood-letting and the anti-phlogistic regimen. The bowels were, in general, very unequal; there was either a looseness or costiveness, though most frequently the latter. 9th. The duration of the disease was, in different cases, and in different situations, very different. In Grenada, when it first broke out, it generally ran its course from twenty-four, thirty-six, to forty-eight hours, in the hospitals. Soon after we sailed from Grenada, cases terminated in three days: thereafter, and as we approached the higher latitudes, and before we reached Ireland, cases were drawn out to ten, twelve, and fifteen days.